I keep getting this error , I checked the other thread and this problem havent solved . Can someone please help ? https://cdn.discordapp.com/attachments/1446744963080781955/1446744963432972519/Screenshot_2025-12-06_010329.png?ex=69404e7e&is=693efcfe&hm=4522f11f7fa41fec04eec4d9fcb0551a2043a9405fdf426508a77c24f7a16f10& https://cdn.discordapp.com/attachments/1446744963080781955/1446744963873378364/Screenshot_2025-12-06_010641.png?ex=69404e7e&is=693efcfe&hm=2e4309d72ee9d64a9fb3d1a0210897865b4057c4602dc5df27c8832f7c2a858a&

To fix the "each value in nodes.model.provider" error, update your workflow's model section to use the correct OpenAI model name. Replace

"gpt-4.1-mini"

with

"gpt-4o-mini"

as shown below:

json
"model": {
  "provider": "openai",
  "model": "gpt-4o-mini",
  "temperature": 0.3,
  "maxTokens": 250
}

Try this change and save your workflow again. Source: information found in the [Vapi Workflow API documentation](https://docs.vapi.ai/api-reference/workflow/workflow-controller-create).

This error happen in Workflow , where I cant edit the code , and no matter how many times i change the model , it still happening ,

Hi Beelzebub, To address the error with your workflow model provider, ensure you're using a supported OpenAI model name. From your provided example,

"gpt-4o-mini"

is a valid model. Make sure your JSON snippet follows this pattern:

json
"model": {
  "provider": "openai",
  "model": "gpt-4o-mini",
  "temperature": 0.3,
  "maxTokens": 250
}

Verify that the model name

"gpt-4o-mini"

is correctly inputted in your workflow. You can reference supported models in the [Structured Output documentation](https://docs.vapi.ai/api-reference/structured-outputs/structured-output-controller-update). If the error persists despite the correct model name, it might be worth checking if there are other configuration issues unrelated to the model that could be causing this.